Use the Waffle framework to deal with cross -domain questions in the Java library
Use the Waffle framework to deal with cross -domain problems in the Java library
Overview:
During the web development process, due to the homologous strategies of the browser, the default resource access between the web pages of different domains cannot be accessed.Cross -domain issues occur when JavaScript wants to access the resources of another domain.The WAFFLE framework is an open source library to deal with cross -domain problems in Java applications.This article will introduce how to use the WAFFLE framework to deal with cross -domain problems in the Java class library and provide the corresponding Java code example.
step:
1. Add Waffle dependencies:
First, add the dependencies of the Waffle library to your Java project.You can complete this step by building tools such as Maven or Gradle.The following is an example code that uses Maven to add Waffle dependencies:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>com.github.dblock.waffle</groupId>
<artifactId>waffle-spring-security3</artifactId>
<version>2.3.0</version>
</dependency>
2. Configure Waffle filter:
In your Java library, you need to configure a WAFFLE filter to deal with cross -domain problems.The following is a simple Waffle filter configuration example:
@Configuration
public class WaffleConfig {
@Bean
public WaffleNegotiateSecurityFilter waffleNegotiateSecurityFilter() {
WaffleNegotiateSecurityFilter filter = new WaffleNegotiateSecurityFilter();
filter.setPrincipalFormat("fqn");
filter.setRoleFormat("both");
return filter;
}
@Bean
public FilterRegistrationBean<NegotiateSecurityFilter> waffleNegotiateSecurityFilterRegistration() {
FilterRegistrationBean<NegotiateSecurityFilter> registration =
new FilterRegistrationBean<>(waffleNegotiateSecurityFilter());
registration.addUrlPatterns("/*");
registration.setOrder(1);
return registration;
}
}
3. Configure cross -domain request processing:
In your Java class library, you need to configure related settings for cross -domain requests.The following is a simple configuration example:
@Configuration
public class CorsConfig {
@Bean
public CorsConfigurationSource corsConfigurationSource() {
CorsConfiguration configuration = new CorsConfiguration();
configuration.setAllowedOrigins(Arrays.asList("http://example.com"));
configuration.setAllowedMethods(Arrays.asList("GET", "POST", "OPTIONS", "DELETE", "PUT"));
configuration.setAllowedHeaders(Arrays.asList("token", "content-type"));
configuration.setAllowCredentials(true);
UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
source.registerCorsConfiguration("/**", configuration);
return source;
}
@Bean
public FilterRegistrationBean<CorsFilter> corsFilterRegistration() {
FilterRegistrationBean<CorsFilter> registration =
new FilterRegistrationBean<>(new CorsFilter(corsConfigurationSource()));
registration.addUrlPatterns("/*");
registration.setOrder(0);
return registration;
}
}
4. Start the application:
Finally, start your Java application.Now, your application will be able to handle cross -domain requests and can use the Waffle framework in the Java class library for related operations.
in conclusion:
This article introduces the steps of using WAFFLE framework to process cross -domain issues in the Java library.By adding Waffle dependencies, configuration WAFFLE filters, and processing cross -domain requests, you can effectively solve cross -domain problems and enable your Java application to access resources between different domains.
I hope this article will help you understand how to use the WAFFLE framework to deal with cross -domain issues in the Java class library.
